Question

How many moles are there in 4.9x10^23 molecules of CO2?

F. 0.81 moles of CO2
G 8.14X10^45
H. 2.95X10^47
J. 2052.44

Answer 1

0.81 moles

Step-by-step explanation:

To find the number of moles in a substance given it's number of entities we use the formula

`n = (N)/(L) \\`

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

`n = \frac{4.9 * {10}^(23) }{6.02 * {10}^(23) } = (4.9)/(6.02) \\ = 0.813953...`

We have the final answer as

0.81 moles

Hope this helps you